I'd like to know this too, I can't seem to get it stable, even if I leave a 30% pattern up there long enough that it feels like it's gonna burn into my screen. Really wondering if I made the right choice with the i1D3...
Just to confirm, I've tried two different players, both AVS709 and GCD (both sizes of apl and non apl on both disks), contact and non contact, with and without a correction matrix, etc.
Display - LG OLED55C8
Speakers - Dali Zensor 3 (Front), Zensor Vokal, Zensor 1 (Surrounds), Alteco C-1 (Atmos) w/SVS PC-2000
Receiver & Misc - Denon AVR-X2200W, Philips Hue, Harmony Elite, Xbox One X, PS4 Pro, Nintendo Switch, Nvidia Shield, Anti-Mode 8033 Cinema, i1 Display Pro